Question

F(x) = 2x+3 and g(x) = x - 7. Find f(3)

Answer 1

f(3) = 9

Explanation:

f(3) = 2x + 3

input the 3 into all x values since it is f(x) basically it tells you the value of x

f(3) = 2(3) + 3

f(3) = 9

Answer 2

f(3) = 9

Explanation:

To evaluate f(3) substitute x = 3 into f(x), that is

f(3) = 2(3) + 3 = 6 + 3 = 9